Josiah harriman



2 SheetsSheet 1.

[No Model.)

JOSIAH HARRIMAN & JOHN HARRIMAN.

SLACK ALARM AND STOP MOTION FOR LOOMS.

Patented June 7, 1898.

|NVENTORS.

WITNESSES.

mfiaw. Qfim 6.961417 mm'rfonusv. I

'(No Model.) 2 Sheets-Sheet 2.

JOSIAH HARRIMAN & JOHN HARRIMAN.

SLACK ALARM AND STOP MOTION FOR LOOMS.

No. 605,199. Patented June 7, 1898.

WITNESSES. lNvENfi'oRs. h 99;? 991/99 Nrrnn STATES PATENT OFFICE.

JOSIAH HARRIMAN AND JOHN HARRIMAN, OF LOWELL, MASSACHUSETTS;

SAID JOI-IN HARRIMAN ASSIGNORTO SAID JoSIAn- IIARRIMAN.

SLACK- ALARMAND STOP-MQTI ON FOR LOOlVlS.

SPfiCIFICATION forming part of Letters Patent No. 605,199, dated June 7, 1898. l 7 Application filed February 7, 1896. ,Serial No. 578,364. (No model.) I

.To. all whom it may concern.-

, Be it known that we, JOSIAH HARRIMAN and J OHN'HKRRIMAN,CitiZenS of theUnited States, residing at Lowell, in the county of Middlesex and Commonwealth of Massachusetts, have.

invented a certain new and useful Improvementin-SlacleAlarrns and Stop-Motions for Looms, of which the following is a specification. I

Our invention. relates to slack-alarms and stop-motions for looms, and is especially adapted to give an audible alarm when any of the rubber warp-threads of narrow ware or elastic goods become slack and to stop the loom when such a rubber warp-thread, is.

. broken.

In elastic goods the rubber threads in. requisite numbers must be introduced under tension in order that the finished fabric maynot be sleazy and inelastic. Each narrow-Ware loom as usually constructed may-be considered as a number (about twenty) of looms, each weaving a separate Web and all having a main shaft, cam-shaft, and lay in common, and the number of elastic threads in such a loom is so great that it is almost impossible for the operative to 'watch them all. The slackening of a part of the rubber threads renders the fabric uneven in appearance, and the slackening of all said rubber threads renders said fabric almost Worthless. When any rubber thread is broken, the loom as hitherto generally used continues to run, weaving the fabric Without the elastic thread, the absence of the rubber not being indicated by any alarm and not being apparent to the eye of the operator, unless the rubber thread happens to be one which should be woven into the fabric near the edge or selvage, until, in

. woven into the -fabric causes the part of the the subsequent operation of steaming, the contraction of the rubber thread properly fabric from which said rubber threadis improperlylomitted to shrivel and present a crinkly appearance, The Web thus lacking a single rubberthread can be sold only for waste, and the loss thus occasioned is very great. Such losses 'a're'avoided by the use of our device andalso theloss occasioned by the stopping. of theloom during pick-outs.

In the accompanying drawings, on two sheets, Figure 1 is a left side elevation of so much of a loom embodying our improvement as is necessary to the explanation of said hum of the same near the left side thereof; Fig- 3, a front elevation of parts of the rear crossgirthsand vibrator and showing three dropwires, one in its normal raised position, anotherin position to operate the slack-alarm, and a third in positionv to operate the stopmotion; Fig. 4, a plan of the parts shown' in Fig. 3; Fig, 5, a plan of. a part of the 100111- frame, breast-beam, and lay, said breastbeam and lay being broken 'awayto show and-stop-cord; Fig. 7, a front elevation ofa part ofthe lay, showing the retaining-lever,

disengages said levers; Fig. 8, anisometric perspective view of an elastic warp-thread and the upper part'of a drop-wire.

In Figs. 1 and 2 the frame A, main shaft or. crank-shaft 13, fast pulley h and loose pul- 'ley b on said shaft B, the cam-shaft I), having a gear (1, engaged by a pinion b on the crank-shaft B, the lay E, pivoted at e on the frame A and connected b'ylthe pitman F to a crank b the shuttles G, running onfthelaybeam 6 of said lay and driven by the usual rack-and-pinion device operated by reciprothe rubber threads H are wound, thetensionapron h, secured to the tension-apron roll'h', the tension-link 7L2, thenote'hed tension-lever lever 71.,andthe idle-rolls I, which change the fibrous material, are all of the usual construction and operation. The loom is is also provided with a belt-shipping fork j, between the tines j" of which the main driving-belt (not shown) runs, said fork being ,a part of or rigidly seoured to the rear end of the belt-shipping lever J,which levenJ is pivoted on a stud extends to the front of the 100111, where'it may provement Fig. 2, a front elevation of a part parts of the stop-motion Fig. 6, a vertical section on the line 6 6 in Fig. 3 of the vibrator the lever engaged thereby, and the stud which eating belts. g g, the warp-beam II, on which hfi'the tension-weight h, adjustable on saidbe operated by hand to throw said driving belt from one to the other of the pulleys b 'b direction of the warps I, of cotton or other 7' rigidly supported on the loom-frarne'A, and

, front usually a long rod K,

and to prevent an accidental movement of said lever. This latch does not interfere with the operation of our improved device, but is by There is which slides in brackets said device rendered unnecessary.

- or loops is, secured to the frontof the breastping-lever and has also beam, which rod has a loop or slot k surrounding the front end portion of the shipa collar fixed on said rod K and provided with a finger kf, adapted when the rod is pushed endwise to strike at the beginning of .its movement on the under side of one of the inclines j j with which the-latch j is provided and to raise the corresponding notch j 9' out of engage-- ment with said shipping-lever, said slot 7a being long enough to allow of said latch being thus raised before the corresponding end of said slot 7a strikes said shipping-lever. Of

course if the latch 9' is omitted the collar 70 and its finger k may. also be omitted.

In this invention we use a spring 7a, which surrounds therod K and is compressed between a collar it fast on said rod, and one of the brackets is, in which said'rod slides, the expansion of said spring shifting the main driving-belt onto the loose pulley b from said fast pulley. We also secure on said rod K a tapering collar is, which, when said rod is moved to shift said belt onto the fast pulley to start the loom, crowds back' and passes a catch or bolt L, Figs. 2 and 5, which slides in bearings Z l, bolted to the under side of the breast-beam, said bolt being then thrown forward by the expansion of a spring 1 surrounding said bolt L and compressed between the bearing l and a collar 1 fixed on said bolt in such a manner as to prevent a return movement of said collar k androd K. Alever L is pivoted on the under side of the breastbeam, one end of -said lever L entering between ears l", with which the collar Z is provided, and the other end Z-of said lever L being bentdownward into a position to be struck by the front end m of another lever M,-pivoted on the l. y, when said front end 'mis raised suificiently for that purpose, as

hereinafter described, normally held down in Fig. 1 as a spiral said front end m being by a spring m, (shown spring,) connecting the of said lever M and the sword e of the lay E. I A vibrator N consisting of two parallel arms n n, connected by-a cross-bar n, is provided at the lower ends of said arms with hubs n n", which loosely tal shaft 71 supported in brackets n on the devices being also of the surround a hori'zon-' frame A, said vibrator being connected to the lay by the rod a and therefore oscillated by the movement of said lay. Above thevibrator N are as many drop-wires or drops Q as there are rubber warp-threads H, each drop being supported on one of said threads H and held in position indicated by the drop at the left in Fig. 3. Each drop-wire Q is represented as a straight wire sliding in horizontal guides q q', (see Fig. 3,) secured to the I frame of the machine, and each drop-wire having at its upper end. a hook g to reach over a rubber warp-thread H in a well-known manner. (See Fig. 8.) An inextensible cord. O is attached at one end to one arm n of the vibrator and at the other end to the operating-lever o of any audible signal, as preferably a mechanical. buzz -beli of any usual construction, such "that the pulling of said cord, will ring the bell 0'. The drawings indicate such a bell-as is shown in United States Patent No. 361,048, gran-ted April 12,, 1887, to Busby, mounted on thearm 'n of said vi' brator. I v i I When any rubber warp slackens, thecorresponding drop Q falls low enough to be struck by the cord 0, causing saidcord to be bent or pushed aside sufficiently to operate the bell and call the attention of the operative, and the bell will be rung at every pick of the 100111 until the tension of the slackened rubber warp is suiiiciently increased to raise the corresponding drop above the path of the cord 0; 'The middle drop M in Fig. 8 is rep resented as in a position to cause the ringingv of the bell.

corresponding drop falls still lower into'the. path of the cord P, which is arranged below the cord 0 and is fastened at. one end to the arm 'n of the vibrator N, from which arm at said cord P passes over an idle-p ulleyp, journaled on the opposite side of said vibrator, then under another idleepulleyp, journaled on the shaft n of said vibrator, then under another idle-pulley p, journaled on the laystud or center e, being attached to the rear end in of the lever M.

The part of the cord P between the arm n and the pulley p is normally horizontal, straight, and of uniform tension, so that said cord P causes no. movement of the lever M except when the proper movement of said cord P with the vibrator is interrupted by afallen drop Q, (see drop at .the right in Fig. 3,) when said cord is bent between the arm n and the pulley 10, causing the rear end of the lever M to be depressed and the front end an of said lever M to strike the end I of the lever L in such a manner as to draw the bolt L backward out of engagement with the tapering collar is and to allow the rod K to be moved by the spring k to shift the-belt onto the loose pulley, as above described. The stopping oi3 the 100111 would then take place if the drop Q fell in front of the cord P; but obviously if the other end of said cord P eo5,19e a said dro p should fall back of the carer the backward ,movement of the vibrator would bend said cord and raisethe' front end of the lever M, and the following forward movement of said vibrator would allow said cord to, straighten and the said front end of said lever to fall before striking the lever L. We therefore use a retaining lever or latch R,

j which is pivoted at r on the lay-beam'E and is provided at its lower, end with a hook r, beveled on its under surface, which book is pushed aside by and engages the front arm m of said lever M (when said arm is raised) f 1. ThQGOlEl;

a vibrator, operated by the'movement of said, lay, drops, each adapted to be supported by" a warp of normal tension, and an audible Sig-t and is ,thereby thrownout of and-holdssaid arm in a raised position until the upper arm 4' of said lever B, just at the end of the forward movement of said lay, strikes the beveled rear end of a backwa'rdlyprojecting stud r secured to the lay-beam,

said lever Mug,

We claim asbur inventionation in;a loom, of'a vibrator I oving part of theloom, drops, each adapted" e supported by a warp of normal tension, and an audible signal supported on said vibrator, and a cord carried by said vibrator and connected to said signal and arranged to strike and who pulled-by a fallen drop, as and for the purpose specified.

2. The combination in a loom, of the lay,

nal supported on said vibrator, and a cord carried by said vibrator and connected to said signal and arrangedto strike and to be pulled by a-fallen drop, as and for the purpose specified.

3, The combination in a loom, of avibrator operated by'a moving part of the loom, a cord,

stretched across said vibrator, a mechanical buzz-bell, supported on said vibrator and adapted to be operated by the pulling of said cord, and drops, each normally supported by a'warp-thread and adapted upon the'slacking of said warp-thread, to fall in the'path' en gagement with for the purpose specified.

of said cord and to pull the same, as for the purpose specified.

4. The combination 1n aloom, of avibrator,

operated by a moving part of said loom, a cord carried'thereby, an audible signal operated by the'pulling of said cord, another cord carried by said vibrator, below said firstnafned cold, the shipping-lever, intermediate mechanism connected to said second-named cordand engaging said shipping-lever, and operated by the pulling of said second-named cord, to disengage said shipping-lever, and drop-wires, each adapted to be supportedby a warp of normal tensio'n'and to fall and engage said first-named cord upon the slacking of such; warp and'to engage said second-named cord upon the breaking of such warp, as and for the purpose specified. e

pulley a fast pulley, a shipping-lever, a ship- "pin'grod," to" move saidlshipping-lever, a

spring, to operate-said rod in one direction, to move the belt from said fast pulley to said loose pulley, a collar fast' on said shippingrod, abolt, normally engaging said collar,.a'- lever, engaging said bolt to draw the same out of engagement with saidcollar, the lay,

another lever, pivoted on said lay,v a vibrator,

operated by the movement of said lay, a cord connecting said vibrator and said last-named lever, and" drops, each adapted to. be supported by a warp-thread of normal tension and when unsupported to engage said cord and to raise said last-named lever into a position to strike said bolt-engaging lever and disengage said bolt from said collar, as and In witnesswhereof we have signed this specification, in the presence of two attesting witnesses, this 28th day of January, A. D. 896.

' JOSIAH I-IARRIMAN. JOHN HARRIMAN. Witnesses:

-ALBERT M. Moons,

' JOSEPH WILLIs, a 

